When leaving airport from short term parking where do you pay

You can either pay on the way out at the booth or begore you get into your car at the machines. When you do it at the machines you have a time limit to get into your car and out of the parkibg lot so be mindful.

At the exit on your way out

Payment is made at the machines at the exit of the parking. Gerardo already answered you.

at the machines out side or at the exit of parking .